Rosemary · Tatvan, Bitlis, Turkey
When to plant rosemary in Tatvan
Main outdoor window
5 Nov - 31 Mar
A climate estimate. Check your soil, forecast and cultivar.
Timed from last spring frost
14 April
In Tatvan, on your chosen risk.
Ready to pick
1 May - 31 Oct
If you plant at the start of the window.
The average last frost. Half of all years are later than this.
Step by step in Tatvan
Download these planting dates (.ics)
Import into Apple Calendar, Google Calendar or Outlook. Dates use the selected risk level and are planning estimates, not frost alerts.
Each window is a planning range. Check the forecast, soil and cultivar before planting; a later date is not automatically safer in hot or wet conditions.
Plant out
5 Nov - 31 Mar
Any time the plant is dormant and the ground is neither frozen nor waterlogged: after leaf fall in autumn, or at the end of winter before growth restarts.
Harvest
1 May - 31 Oct
Rosemary through the year
Against the frost risk in Tatvan
Seasonal context
Rainfall and the growing season in Tatvan
April has the highest average precipitation (81 mm); August has the lowest (4 mm). Compare this pattern with the planting windows and your water supply.
During wetter months, check that beds and containers drain after heavy rain. During drier months, plan how you will keep seeds and new transplants watered. Monthly averages can hide long dry spells and intense storms; they do not show soil moisture, humidity or this week's weather.
Source: NASA POWER, corrected MERRA-2 precipitation, 2001–2020. Values are approximate monthly totals, including the water equivalent of snow, from the nearest 0.5° × 0.625° grid cell. This reference period differs from the temperature record. Rainfall provides context and does not change the calculated planting dates. Method and limitations.
Monthly growing conditions in Tatvan
Compare the planting window with the local temperature pattern. These are historical monthly averages, not this year's forecast or measured soil temperatures. Average frost days do not tell you whether a particular night will freeze.
| Month | Average low | Average high | Frost days |
|---|---|---|---|
| January | -10°C (14.1°F)14.1°F (-10°C) | -1.1°C (30.1°F)30.1°F (-1.1°C) | 30.8 |
| February | -7.2°C (19°F)19°F (-7.2°C) | 0.5°C (32.9°F)32.9°F (0.5°C) | 27.1 |
| March | -1.5°C (29.3°F)29.3°F (-1.5°C) | 5.3°C (41.6°F)41.6°F (5.3°C) | 20.0 |
| April | 3.5°C (38.3°F)38.3°F (3.5°C) | 11.4°C (52.6°F)52.6°F (11.4°C) | 4.4 |
| May | 8.5°C (47.4°F)47.4°F (8.5°C) | 17°C (62.5°F)62.5°F (17°C) | 0.1 |
| June | 13.8°C (56.9°F)56.9°F (13.8°C) | 24.2°C (75.5°F)75.5°F (24.2°C) | 0.0 |
| July | 17.7°C (63.9°F)63.9°F (17.7°C) | 29.5°C (85°F)85°F (29.5°C) | 0.0 |
| August | 18.4°C (65°F)65°F (18.4°C) | 29.9°C (85.7°F)85.7°F (29.9°C) | 0.0 |
| September | 13.7°C (56.6°F)56.6°F (13.7°C) | 24.2°C (75.5°F)75.5°F (24.2°C) | 0.0 |
| October | 7.5°C (45.5°F)45.5°F (7.5°C) | 16.3°C (61.3°F)61.3°F (16.3°C) | 0.6 |
| November | 0.6°C (33.1°F)33.1°F (0.6°C) | 8.1°C (46.6°F)46.6°F (8.1°C) | 10.9 |
| December | -5.9°C (21.5°F)21.5°F (-5.9°C) | 1.8°C (35.3°F)35.3°F (1.8°C) | 27.9 |
For rosemary, also check drainage, sunlight and cultivar requirements. See the rainfall context above; humidity, irrigation and local pest pressure are not calculated.
Local growing check
Before choosing rosemary for Tatvan
- April is the wettest month in the rainfall grid, averaging about 81 mm. Check how your own bed drains and plan watering around actual soil moisture; monthly rain totals are not an irrigation schedule.
The temperature and rainfall tables on this page show the underlying climate estimates. How these suitability checks work · Record what happens in your garden.
Before you plant rosemary
Use the calendar to plan ahead, then check the conditions in your own garden.
- Frost tolerance does not make saturated or frozen soil suitable for planting. Wait until the bed can be worked without smearing or compacting it.
- Check mature size, drainage and cultivar suitability before choosing a permanent position. A suitable planting window does not guarantee long-term survival or fruiting.
Choose the shrub shape and protect the roots from wet soil
Give it strong light and a freely draining root zone. Established rosemary tolerates dry conditions, but a newly planted shrub or a root-filled pot still needs moisture checks. Persistent wetness is a greater concern than a missed fertiliser application.
Cuttings or a named nursery plant preserve the selected habit more reliably than seed. Harvest leafy shoot tips and shape the plant lightly; do not rely on bare old wood to regenerate after a severe cut. Check the exact cultivar's winter tolerance before leaving a container outdoors.
What to record this season
Did winter wetness, cold exposure or pot drying cause the main loss of growth? Add the cultivar, sowing date and conditions to your growing record so you can compare next season.
Further reading: NC State Extension: Salvia rosmarinus . General crop guidance; local dates on this site are calculated separately. Source checked 19 September 2026 by Safe to Plant; this is not an expert review.
The reference describes plant identity and cultivation. Its regional calendar months and hardiness observations do not validate the calculated dates for another location.
How the dates are calculated and their limits · Keep a growing record · Report a local discrepancy
Why these dates
Give it strong light and a freely draining root zone. Established rosemary tolerates dry conditions, but a newly planted shrub or a root-filled pot still needs moisture checks. Persistent wetness is a greater concern than a missed fertiliser application.
Check the named variety and local forecast before exposing young growth. The catalog cold-damage figure is a reference, not a guarantee: plant age, acclimatisation, wind and the duration of a freeze affect damage.
Rosemary are planted once and then left in place, so there is no sowing offset to resolve. What matters in Tatvan is the shape of the year: this crop is dormant through the winter and is planted while it sleeps, any time between leaf fall in autumn and the restart of growth in spring, so long as the ground is neither frozen nor waterlogged. That is why the window below spans the cold months rather than sitting in the middle of the growing season.
Tatvan sits in zone 6a, which is colder than the catalog range. Check a locally proven cultivar and a realistic protection plan before planting. The calculated dates do not confirm that this crop is suitable here. Check cultivar requirements and local growing experience before planting.
The general establishment guide is around year 1, under suitable conditions. This is not a prediction for this location; cultivar, winter conditions and care determine whether it crops reliably.
Growing rosemary in Tatvan
Can I grow rosemary in Tatvan?
The calendar estimates a planting window, not a guarantee of success. April is the wettest month in the rainfall grid, averaging about 81 mm. Check how your own bed drains and plan watering around actual soil moisture; monthly rain totals are not an irrigation schedule.
When should I plant rosemary in Tatvan?
Aim for 5 Nov - 31 Mar in an average year. If you would rather not gamble on the weather, wait until 22 Oct - 11 Apr - by then frost has finished in nine years out of ten.
When might rosemary be ready to harvest in Tatvan?
The estimated period is 1 May - 31 Oct, based on 90 to 120 days from the modeled planting date. Cultivar, planting material and growing conditions can change this interval; check the plant as well as the calendar.
How much frost will rosemary tolerate?
Check the named variety and local forecast before exposing young growth. The catalog cold-damage figure is a reference, not a guarantee: plant age, acclimatisation, wind and the duration of a freeze affect damage.